| 2009-2010 | CESA Technical Committee CEDEC Advisory Board |
| 2006-2010 | ACM SIGGRAPH / Eurographics Symposium on Computer Animation (SCA) Program Committee |
| 2007, 2010 | International Symposium on Non-photorealistic Animation and Rendering (NPAR) Program Committee |
| 2006, 2010 | Conputer Graphics International Conference (CGI) Paper Committee |
| 2009 | SIGGRAPH ASIA 2009 Sketches and Posters Chair |
| 2008 | SIGGRAPH ASIA 2008 Technical Papers Committee, Sketches and Posters Committee |
| 2008 | NPAR 2008 (The 6th International Symposium on Non-photorealistic Animation and Rendering) Conference & Program co-Chair |
| 2007-2008 | The Pacific Conference on Computer Graphics and Applications (PG) Program Committee |
| 2006-2008 | The Eurographics Workshop on Sketch-Based Interfaces and Modeling (SBIM) Program Committee |
| 2008 | the Annual Conference on Computer Animation and Social Agents (CASA) Program Committee |
| 1999,2001,2005, 2006,2007 |
ACM SIGGRAPH Symposium on Interactive 3D Graphics (I3D) Program Committee |
| 2007 | Computer Vision / Computer Graphics Collaboration Techniques and Applications (Mirage) Program Committee |
| 2006-2007 | The Institute of Image Electronics Engineers of Japan / Visual Computing Vice-Chair |
| 2007 | IIEEJ Image Electronics and Visual Computing Workshop (IEVC) Program co-chair |
| 2007-2008 | The Institute of Image Electronics Engineers of Japan (IIEEJ) Vice-Chair |
| 2007-2008 | The Institute of Image Electronics Engineers of Japan (IIEEJ) / Visual Computing Committee Vice-Chair |
| 2006 | International Conference on Computer Graphics Theory and Applications (GRAPP) Paper Committee | 2005 | ACM SIGGRAPH / Eurographics Symposium on Computer Animation (SCA) Program Co-chair |
| 2004 | ACM SIGGRAPH Paper Committee |
| 2003,2004 | ACM SIGGRAPH / Eurographics Symposium on Computer Animation (SCA) Paper Committee |
| 1997-1999, 2001,2003,2004 | Pacific Graphics Paper Committee |
| 1994-2000 | NICOGRAPH Paper Committee |
| 1994,1995 | Eurographics Workshop on Rendering Technical Paper Committee |
| 1992-1993 | Image Com'93 Scientific Committee |